3 embedded forms in 3 webpages all linked

3 embedded forms in 3 webpages all linked

Hi,

I have 3 forms that are on 3 webpages that are directly connected to each other.

I have connected them by having the "redirect" page to the next page with the next form so it goes

home page: form 1 redirected to
page two: form 2 redirected to 
page three: form 3

When I look at the zoho form entries, how do i tell which of each form are related to the other? Is the only option looking at the time of submission, or can there be a way to have the "referrer name" be unique across the 3 forms. For instance the google ads/ tag manager tag.